Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 623 [Rate centres in NPA 623] [Dial plan for NPA 623]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-385 A Phoenix AZ PHNZAZDMDS3  7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 0 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 1 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 2 Phoenix AZ   5562 METROPCS, INC. 666   2004-10-02   
623-385 3 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 4 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 5 Phoenix AZ   5562 METROPCS, INC. 666   2004-08-13   
623-385 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-01-02   
623-385 7 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-385 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2004-07-06   
623-385 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-01-02   
623-386 A Phoenix AZ BCKYAZMADS0  9636 QWEST CORPORATION 666      
623-387 A Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-387 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 6 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 7 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-05-20   
623-387 8 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2011-08-17   
623-387 9 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2011-08-17   
623-388 A Phoenix AZ CRCYAZNMRS1  9636 QWEST CORPORATION 666      
623-388 0 Phoenix AZ   9636 QWEST CORPORATION 666      
623-388 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2006-03-09   
623-388 2 Phoenix AZ   9636 QWEST CORPORATION 666      
623-388 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-04-12   
623-388 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-04-12   
623-388 5 Phoenix AZ   9636 QWEST CORPORATION 666      
623-388 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-04-12   
623-388 7 Phoenix AZ   5562 METROPCS, INC. 666   2005-04-03   
623-388 8 Phoenix AZ   9636 QWEST CORPORATION 666      
623-388 9 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 A Phoenix AZ WNBGAZ01RS1  9636 QWEST CORPORATION 666      
623-393 0 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 1 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 2 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 3 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 4 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 5 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 6 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 7 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 8 Phoenix AZ   9636 QWEST CORPORATION 666      
623-393 9 Phoenix AZ   9636 QWEST CORPORATION 666      
623-396 A Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-396 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-11-03   
623-396 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-11-03   
623-396 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2011-11-03   
623-396 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2012-02-03   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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